Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
Book Description
Near-field Noise Prediction for Aircraft in Cruising Flight: Methods Manual
A Computer Program for the Prediction of Near Field Noise of Aircraft in Cruising Flight: User's Guide
Scientific and Technical Aerospace Reports
NASA Technical Memorandum
The Shock and Vibration Digest
Prediction Methods for Near Field Noise Environments of VTOL Aircraft
Author: Louis C. Sutherland
Publisher:
ISBN:
Category :
Languages : en
Pages : 244
Book Description
This report establishes a consistent set of prediction methods which may be used to estimate near field noise levels for jet powered and rotor/propeller powered VTOL aircraft operating in close proximity to the ground. The methods provided utilize available theory augmented extensively by experimental data which was available or was obtained during the program. The noise prediction methods presented will allow an analysis of near field environments of VTOL aircraft using a simplified procedure suitable for manual calculations. The experimental effort carried out in the program consisted of noise measurements in the near field of a model propeller and a subsonic jet in a free and vertical configuration. Ground reflection correction factors for a simple source are tabulated along with the computer program listing. The methods described in this report are intended for use by aircraft designers for the prediction of the near field noise environment of VTOL aircraft as required in MIL A 8893 Airplane Strength and Rigidity, Sonic Fatigue Resistance.
Publisher:
ISBN:
Category :
Languages : en
Pages : 244
Book Description
This report establishes a consistent set of prediction methods which may be used to estimate near field noise levels for jet powered and rotor/propeller powered VTOL aircraft operating in close proximity to the ground. The methods provided utilize available theory augmented extensively by experimental data which was available or was obtained during the program. The noise prediction methods presented will allow an analysis of near field environments of VTOL aircraft using a simplified procedure suitable for manual calculations. The experimental effort carried out in the program consisted of noise measurements in the near field of a model propeller and a subsonic jet in a free and vertical configuration. Ground reflection correction factors for a simple source are tabulated along with the computer program listing. The methods described in this report are intended for use by aircraft designers for the prediction of the near field noise environment of VTOL aircraft as required in MIL A 8893 Airplane Strength and Rigidity, Sonic Fatigue Resistance.
Noise Predictions of a High Bypass Turbofan Engine Using the Lockheed Near-Field Noise Prediction Program
A Study of the Prediction of Cruise Noise and Laminar Flow Control Noise Criteria for Subsonic Air Transports
Data Development for ASTM E24.06.02 Round Robin Program on Instability Prediction
Aircraft Noise Prediction Program
Author: W. E. Zorumski
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 204
Book Description
Aircraft noise prediction theoretical methods are given. The prediction of data which affect noise generation and propagation is addressed. These data include the aircraft flight dynamics, the source noise parameters, and the propagation effects.
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 204
Book Description
Aircraft noise prediction theoretical methods are given. The prediction of data which affect noise generation and propagation is addressed. These data include the aircraft flight dynamics, the source noise parameters, and the propagation effects.